Seat-back rest



May 20, 1930. GREENWOOD 1,759,694

SEAT BACK REST Filed Nov. 2. 1.928

ATTORNEY llulllllll 50 the hinged side members and the ends of the For the purpose of preventing the hook ele- 1 Patented May 20, 1930 1 759 94 UNITED STATES PATET; OFFICE] Application filed. November 2, 1923. Serial 1 I'o. 316,739.

My invention relates to back rests for seats, cross member to'hold the latter to theside and an object of the same is to provide a colmembers." Wing nuts 14 are received on the lapsible back rest for association with board projecting ends of the bolts and bear against seats, such as are employed in row-boats and the rear faceof the cross bar. 1 1

5 bleachers, etc. v A plurality of spaced vertical bars 15 ex- Further the invention provides a back rest tend from the panel to the horizontal cross which will be detachable and effectively sebar, and are removably associated with these cured to a board seat, so as to produce a comparts by having their ends accommodated in fortable and rigid seat structure. coinciding verticallyalinedrecesses 6 in the With the preceding and other objects and Cross member and panel, respectively. a 9 advantages in mind, theinvention consists in I For the purpose of supporting the back the novel combination of elements, construcrest in a. vertical position, parallelangula'rly tions and arrangements of parts and operadisposed supporting arms 17, terminating in tions to be hereinafter more fully described, hooks 18 at their lower ends, are associated v claimed and illustrated in the accompanying with the side membersfThese arms 17 are drawing, wherein: formed with longitudinal slots 19 at their Figure 1 is a perspective View of the invenupper ends through which lateral threaded tion associated with a row-boat seat, studs 20, carried by the side members,'project.

Figure 2 is a side elevationof the device as lVing nuts 21 are associated with these studs sociated with a board seat, I I for holding the arms in operative and in- Figure 3 is a similar view illustrating the operative positions. When the arms are application of the back rest 'when'the board arranged in inoperative position, the hook seat is of increased thickness and width, elements engage lateral studs 22 projecting Figure 4 is a fragmentary sectional detail from the side members at their lower ends. H view, and. When the device is used, as shown in Fig- Figure 5 is a side elevation of the device in ures '1 and2, the hook elements 18 embrace collapsed position. the forward longitudinal edge of the board Referring to the invention in'detail, a horiseat. When, however, the board seat is of a zontal panel 5 to be arranged in abutting relagreater thickness than the one disclosed in 3 tion to a board seat 6 to constitute a continua- Figures '1 and 2, the pointsof the hookele tion thereof is provided. .Arranged at the ments will penetrate the forward edge of ends of the panel 5 is a pair of side members the board seat, as illustrated in Figure 8. 6 which arehingedly connected to the panel To relieve the back rest of rearward strain by hinge connections. These hinge connecwhen used in this manner, lateral heads or tions consist of metal straps 8 riveted or blocks 23 project from the rear edges of the otherwise secured, as at 9, to the upper face side members at their lower ends to rest'di-. of the panel 5 at its ends. The straps 8 are rectly upon the upper face of the board seat 6. formed with hook elements 10, which engage When it is desired to collapse the back laterally projecting U-shaped staples 11 prorest, the cross bar 12 is first removed, and the jecting from the inner faces of the side membars 15 disengaged from the panel 5. After bers adjacent their lower ends. Notches 4 the arms 17 have been adjusted to lie parare formed in the forward edges of the side allel to the side members 6, as disclosed in members at their lower ends which accommo- Figure 5, these side members may be folded date the rear longitudinal edge of the board one upon the other to lie upon the panel 5. seat 6. i As the bars 15 and cross member 12 are sub- A horizontal cross bar 12, having its ends stantially of the same contour, they may be received in recesses 18in the upper ends of stacked or superimposed upon the folded side the side members, is provided. Bolts 1% eX- members, and secured thereon in any desired I tend transversely through the upper ends of manner.

V ments 10 from becoming accidently disengaged-from the staples 11 While the seat is being setup for use, pivoted latches 22 are carried by the inner faces of the side members ,6 adjacent'their lower ends and are adapted to be swung against the straps 8 as illus- V trated in Figures 1 and i. v

" What is claimed is: e p f 1. In a detachable back rest for board seats, a panel to be arranged in abutting'relation to the seat, a vertical back-rest'carried there- I by and means for attachingthe backrest to the board seat with said panel abutting an edge of the seat and in the same plane there- With.""

1 2} In a de a able ack e or sea s,

' a panel tobe arranged in abutting relation to tl le sci-aha vertical back rest carried thereby, and'arms carried by the back rest and engageable with the forward longitudinal edge o h s at to a t h he p e to the se with said panel abutting an edge of the seat and in'the same plane therewith.

7 3.I In a detachable back rest forboard -.;seats, a panel to be arranged in abutting relation to the seat, a vvj ertical back rest carried thereby, andarrns piyotally carried by the backrest and terminating in hook elements at their lower endsforengagement ith the forward edge of the seat to attach the panel to'the seat with said panel abutting an edge oft he seatfland in the same plane therewith.

. 4.1111 a detachable back rest for board therewith. V f

e-Signed at Sturgeon Bay, in the countyof Door a dState of Wisconsin, this 15thjday Qctober, 1-928; 7

PETER R EN OOD. I 

